A conveyor belt automatic straightening device
By combining transparent pressure plates, magnetic strips, and air nozzles, the problem of blockage caused by parts adhering to each other on the conveyor belt is solved, enabling continuous operation of automated production lines and efficient parts transportation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHANGZHOU ZEAO AUTOMATION EQUIP CO LTD
- Filing Date
- 2026-04-27
- Publication Date
- 2026-06-05
AI Technical Summary
On automated production lines, small parts are easily attracted to each other due to magnetic or electrostatic effects, resulting in overlap, stacking, or sticking, which can cause blockages in the conveyor belt and affect production continuity.
It adopts a combination of transparent pressure plate, magnetic strip, baffle, air nozzle and control system. The transparent pressure plate adjusts the gap between parts, the magnetic strip slightly magnetizes the parts, the air nozzle blows air alternately to remove blockages, and the control system automatically adjusts the conveyor belt operation and air blowing sequence according to sensor signals.
It effectively prevents parts from overlapping and falling off, reduces the frequency of manual cleaning, improves production continuity and changeover efficiency, and ensures that parts can smoothly enter the next process.
Smart Images
Figure CN122144361A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of automated conveying equipment technology, and in particular to an automatic conveyor belt straightening device. Background Technology
[0002] On automated production lines, small parts (such as magnetic metal parts, gaskets, screws, electronic components, etc.) are usually conveyed to tracks via conveyor belts to proceed to the next process (such as assembly, packaging, or testing).
[0003] However, in actual production, due to the magnetic properties of the parts themselves, or the static electricity and magnetization effects generated by friction with the conveyor belt during transportation, the parts are prone to adsorption to each other, resulting in overlapping, stacking, or sticking on the conveyor belt. When these parts enter the track, the overlapping parts will get stuck at the track entrance, causing blockage and affecting the normal arrangement and supply of subsequent parts. In severe cases, it can lead to the shutdown of the entire production line. Therefore, there is a need to provide an automatic conveyor belt straightening device that can effectively solve the above-mentioned problems of overlapping and blockage of parts. Summary of the Invention
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an automatic conveyor belt straightening device.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: An automatic conveyor belt straightening device includes: a frame and a conveyor belt, and further includes: a transparent pressure plate disposed above the conveyor belt, wherein a compression spring is disposed between the transparent pressure plate and the conveyor belt, and the compression spring can adjust the height of the transparent pressure plate relative to the surface of the conveyor belt. First and second baffles are installed on both sides of the conveyor belt to prevent parts from falling off; The magnetic strip is installed below the conveyor belt, and the magnetic strip extends along the conveying direction and cannot be composed of multiple segments spliced together. The track is installed at the exit end of the conveyor belt; Multiple full-load sensors arranged along the track are used to detect whether the parts in the track are fully arranged; Photoelectric beam sensor installed at the track entrance; The left and right air nozzles are movable and can be set on both sides of the track entrance.
[0006] Preferably, it also includes: a control system; When all the full-load sensors receive a signal, it is determined that the track is full of parts; When the full material sensor has no signal and the photoelectric beam sensor has a signal, the conveyor belt is controlled to run in the reverse direction for a certain distance before running in the forward direction. At the same time as the forward running begins, the left air nozzle is controlled to blow air, pause for a preset time, and then the right air nozzle blows air in sequence to disrupt the arrangement of the parts.
[0007] Preferably, the transparent pressure plate is made of transparent plastic or glass, and the gap between its lower surface and the upper surface of the conveyor belt is adjusted by adjusting the compression of the spring to accommodate parts of different thicknesses.
[0008] Preferably, the height of the first baffle and the second baffle is higher than the maximum height of the parts on the conveyor belt, and the width between the two baffles is adjustable to accommodate parts of different diameters.
[0009] Preferably, the magnetic strength of the magnetic strip is selected according to the material, weight and diameter of the part to be conveyed, and its length is matched with the working area length of the conveyor belt.
[0010] Preferably, the left and right air nozzles are connected to an external air source, and their air blowing direction is at an acute angle to the conveying direction of the conveyor belt, and the air blowing directions of the two are set opposite to each other.
[0011] Preferably, the blowing sequence and pause time of the left and right air nozzles are programmable and set by the control system. The first blowing is used to loosen the stacked parts, and during the pause, the parts tend to be stabilized by the magnetic strip. The second blowing is used to adjust the posture of the parts to facilitate their entry into the track.
[0012] Preferably, the magnetic strip is a single, seamless structure, and the magnetic force of the magnetic strip causes the parts on the conveyor belt to be slightly magnetized and their magnetism to weaken during the conveying process.
[0013] Preferably, the frame is further provided with an adjustment mechanism, which includes a fixed frame, a shaft-mounted motor, a gear, two connecting frames and two racks; The fixed frame is fixedly connected to the outer bottom of the frame, the connecting frame is slidably connected to the side wall of the fixed frame, the shaft motor is fixedly installed at the center of the fixed frame, the rack is fixedly assembled on the connecting frame, the gear is fixedly assembled on the output shaft end of the shaft motor, and both racks mesh with the gear.
[0014] Preferably, the two connecting brackets are fixedly connected to the left and right air nozzles respectively, and are used to adjust the positions of the left and right air nozzles when moving.
[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. By using the transparent pressure plate above the conveyor belt and the compression spring below it, the gap can be automatically adjusted according to the thickness of the parts, flattening or pushing the overlapping parts apart, ensuring that the parts are arranged in a single layer after passing through the pressure plate area. At the same time, the first baffle and the second baffle set on both sides of the conveyor belt are higher than the maximum height of the parts and the width is adjustable, which can effectively prevent the parts from falling from the side and adapt to parts of different diameters. Thus, the above structure reduces the production line interruption caused by overlapping or falling parts. 2. By setting a complete and continuous magnetic strip under the conveyor belt, the magnetic strip cannot be spliced from multiple segments. Its magnetic strength is selected according to the material, weight and diameter of the parts, and its length matches the working area of the conveyor belt. The seamless design of the whole strip avoids the parts from attracting each other when being picked up due to the change of magnetic poles. The magnetic force weakens the magnetism after the parts are slightly magnetized. This not only prevents the parts from jumping or overlapping during the conveying process, but also ensures that the parts will not stick together due to magnetism when entering the track, thus overcoming the problem of cascading attraction caused by traditional spliced magnetic strips. 3. Multiple full-load sensors arranged along the track can detect in real time whether the parts in the track are fully arranged. The photoelectric beam sensor at the track entrance is used to detect whether the parts are blocked. The control system automatically judges based on the sensor signals: when some full-load sensors have no signal and the photoelectric beam sensor has a signal, it controls the conveyor belt to run in reverse for a certain distance and then run in the forward direction. While running in the forward direction, it controls the left and right air nozzles to blow air alternately. This intelligent control logic can automatically remove the blockage at the track entrance, reduce the frequency of manual cleaning, and improve production continuity. 4. By connecting the left and right air nozzles to external air sources respectively, with their blowing directions at an acute angle to the conveyor belt's conveying direction and their blowing directions being set opposite to each other, the airflow is decomposed into forward thrust and lateral pushing force. The two airflows form opposing turbulence in front of the track 8 inlet, which can effectively break up the stacked or jammed state of the parts without blowing them off. The control system operates according to a programmable sequence of left blowing, pause, and right blowing. The first blowing loosens the stacked parts, and during the pause, the parts tend to stabilize under the action of the magnetic strip. The second blowing adjusts the posture of the parts to facilitate their entry into the track. This alternating sequence has a higher alignment success rate than simultaneous blowing or unidirectional blowing. 5. An adjustment mechanism is installed on the frame, including a fixed frame, a shaft-mounted motor, gears, two connecting frames, and two racks. The two connecting frames are fixedly connected to the left and right air nozzles, respectively. When the shaft-mounted motor drives the gears to rotate, the two racks drive the two connecting frames to move synchronously in opposite directions, thereby adjusting the distance between the left and right air nozzles and ensuring that they are always symmetrical with respect to the center of the track. This allows the air nozzle positions to be quickly adjusted without tools when changing parts of different diameters, ensuring the best blowing effect and improving the versatility and production changeover efficiency of the equipment. Attached Figure Description
[0016] Figure 1 This is a front structural diagram of an automatic conveyor belt straightening device proposed in this invention; Figure 2 This is a side view of an automatic conveyor belt straightening device proposed in this invention. Figure 3 This is a schematic diagram of the adjustment mechanism structure of an automatic conveyor belt straightening device proposed in this invention; Figure 4 This invention proposes an automatic conveyor belt straightening device. Figure 3 A schematic diagram of structure A in the diagram; Figure 5 This is a schematic diagram of the frame structure of an automatic conveyor belt straightening device proposed in this invention; Figure 6 This is a schematic diagram of the magnetic strip structure of an automatic conveyor belt straightening device proposed in this invention; Figure 7 This is a schematic diagram of a conveyor belt in an automatic conveyor belt straightening device proposed in this invention; Figure 8 This is a schematic diagram of the transparent pressure plate structure of an automatic conveyor belt straightening device proposed in this invention.
[0017] In the diagram: 1. Frame; 2. Conveyor belt; 3. Transparent pressure plate; 4. Compression spring; 5. First baffle; 6. Second baffle; 7. Magnetic strip; 8. Track; 9. Full material sensor; 10. Photoelectric beam sensor; 11. Left air nozzle; 12. Right air nozzle; 13. Adjustment mechanism; 131. Fixed frame; 132. Connecting frame; 133. Shaft-mounted motor; 134. Rack; 135. Gear. Detailed Implementation
[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.
[0019] The terms used in this invention, such as "upper," "lower," "left," "right," "middle," and "one," are merely for clarity of description and are not intended to limit the scope of the invention. Any changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.
[0020] Reference Figures 1-8 An automatic conveyor belt straightening device includes: a frame 1 and a conveyor belt 2, and also includes: a transparent pressure plate 3 disposed above the conveyor belt 2, and a compression spring 4 disposed between the transparent pressure plate 3 and the conveyor belt 2, the compression spring 4 being able to adjust the height of the transparent pressure plate 3 relative to the surface of the conveyor belt 2. First baffle 5 and second baffle 6 are installed on both sides of conveyor belt 2 to prevent parts from falling off; The magnetic strip 7 is installed below the conveyor belt 2. The magnetic strip 7 extends along the conveying direction and cannot be made up of multiple segments spliced together. Track 8 is installed at the exit end of conveyor belt 2; Multiple full-load sensors 9 are arranged along track 8 to detect whether the parts in track 8 are fully arranged; Photoelectric beam sensor 10 is installed at the entrance of track 8; The left air nozzle 11 and the right air nozzle 12 are movable and set on both sides of the inlet of track 8; It also includes: control systems; When all full-load sensors 9 have a signal, it is determined that the parts in track 8 are full; When the full material sensor 9 has no signal and the photoelectric beam sensor 10 has a signal, the conveyor belt 2 is controlled to run in reverse for a certain distance and then run in the forward direction. At the same time as the forward operation begins, the left air nozzle 11 is controlled to blow air, pause for a preset time, and the right air nozzle 12 is controlled to blow air in sequence to disrupt the arrangement of the parts. The blowing sequence and pause time of the left air nozzle 11 and the right air nozzle 12 are programmable and set by the control system. The first air blowing is used to loosely stack the parts. During the pause, the parts tend to be stabilized by the magnetic strip 7. The second air blowing is used to adjust the posture of the parts to facilitate their entry into the track 8. The frame 1 is also equipped with an adjustment mechanism 13, which includes a fixed frame 131, a shaft motor 133, a gear 135, two connecting frames 132 and two racks 134; The fixed frame 131 is fixedly connected to the bottom outer side of the frame 1, the connecting frame 132 is slidably connected to the side wall of the fixed frame 131, the shaft motor 133 is fixedly installed at the center of the fixed frame 131, the rack 134 is fixedly mounted on the connecting frame 132, and the gear 135 is fixedly mounted on the output shaft end of the shaft motor 133, and both racks 134 mesh with the gear 135.
[0021] In the embodiment of the above technical solution, after the equipment is started, the control system controls the conveyor belt 2 to run in the forward direction. The parts to be sorted are placed at the feed end of the conveyor belt 2. As the conveyor belt 2 moves forward, the first baffle 5 and the second baffle 6 are set on both sides of the conveyor belt 2 to prevent the parts from falling from the side during the conveying process. The width between the two baffles can be pre-adjusted according to the diameter of the parts to ensure that the parts are roughly arranged in a single row on the belt surface. A transparent pressure plate 3 is set above the conveyor belt 2. A compression spring 4 is installed between the transparent pressure plate 3 and the conveyor belt 2. When the parts pass under the transparent pressure plate 3, if there are overlapping or stacked parts, the upper part will touch the lower surface of the transparent pressure plate 3. Since the compression spring 4 has a certain elasticity and the compression amount can be adjusted, the transparent pressure plate 3 will apply a downward pressure to flatten or push the overlapping parts apart, so that the parts are basically arranged in a single layer after passing through the pressure plate area. The transparent pressure plate 3 is made of transparent plastic or glass, which makes it easy for the operator to observe the flow state of the internal parts. A complete magnetic strip 7 is arranged below the conveyor belt 2 along the conveying direction. The magnetic strength of the magnetic strip 7 is pre-selected according to the material, weight and diameter of the parts. When the parts pass over the area above the magnetic strip 7, the magnetic strip 7 generates a weak downward magnetic attraction on the parts, so that the parts are slightly magnetized and stick tightly to the surface of the conveyor belt 2. This further prevents the parts from jumping or overlapping due to mutual collision or static electricity. At the same time, since the magnetic strip 7 is a complete and unspliced structure, its magnetic pole direction is consistent throughout the entire conveying direction, avoiding the problem of parts attracting each other when being picked up due to changes in magnetic poles. After being acted upon by the magnetic strip 7, the residual magnetism of the parts is weakened, so that they will not stick together due to magnetism when entering the track 8 later. After being processed by the transparent pressure plate 3 and the magnetic strip 7, the parts enter the track 8 at the outlet end of the conveyor belt 2 and move forward along the track 8. Multiple full-load sensors 9 are arranged along the length of the side of the track 8, each sensor corresponding to a part station. When all full-load sensors 9 have a signal, it means that the parts in the track 8 are arranged. The control system controls the conveyor belt 2 to stop or slow down, waiting for the downstream process to take away the parts. When some full-load sensors 9 have no signal (i.e., the track 8 is not full) but the photoelectric photoelectric sensor 10 set at the entrance of the track 8 has a signal, it means that the parts have reached the entrance of the track 8 but have not been able to enter the track 8 smoothly, resulting in blockage or disordered arrangement. At this time, the control conveyor belt 2 reverses a preset distance, causing the parts piled up at the entrance of track 8 to retreat backward, exit the entrance area of track 8, and return to the range of action of magnetic strip 7. After the reverse rotation ends, the control conveyor belt 2 immediately restarts forward rotation. At the start of forward rotation, the following actions are performed in sequence: the left air nozzle 11 blows air once, with the air direction at an acute angle to the conveyor belt 2 and pointing to the right side of the entrance of track 8, to disperse the parts piled up or stuck on the left side, pausing for a preset time. During this period, the parts tend to stabilize and rearrange under the action of magnetic strip 7. The right air nozzle 12 blows air once, with the air direction... The air blowing direction points to the left side of the entrance to track 8, which is used to blow the parts piled up on the right side toward the middle and guide them into track 8. Through the sequence of blowing left, pausing and blowing right, the parts are scrambled and the parts that were originally stuck at the entrance change their posture or position, making it easier for them to slide into track 8. The above blowing sequence and pause time can be programmed by the control system to adapt to the characteristics of different types of parts. If the photoelectric beam sensor 10 still has a signal and the partially full sensor 9 still has no signal after one settling cycle, the control system can repeat the above reverse, forward, left and right blowing cycle until the parts successfully enter track 8. To accommodate parts of different diameters or lengths, the left air nozzle 11 and right air nozzle 12 are movably mounted on both sides of the inlet of the track 8 and connected to an adjustment mechanism 13. When the distance between the air nozzles needs to be adjusted, the control system controls the shaft-holding motor 133 to rotate, and the gear 135 rotates with the output shaft of the shaft-holding motor 133. Since the two racks 134 are respectively meshed on the left and right sides of the gear 135, the rotation of the gear 135 will drive the two racks 134 to move synchronously in opposite directions. When the gear 135 rotates clockwise, the left rack 134 drives the left connecting frame 13. 2. When the gear 134 moves to the left, the right rack 134 drives the right connecting frame 132 to move to the right, thereby increasing the distance between the left air nozzle 11 and the right air nozzle 12. Conversely, when the gear 135 rotates counterclockwise, the distance between the two air nozzles decreases. This adjustment method ensures that the two air nozzles always move symmetrically relative to the center of the track 8, ensuring the balance of the blowing effect. Through the above-mentioned adjustment mechanism 13, the control system can automatically or manually adjust the lateral position of the air nozzles according to the diameter of the parts, so that the blowing point is accurately applied to the parts accumulation area, further improving the sorting efficiency. It should be noted that: all the above-mentioned electrical equipment is electrically connected to the control terminal via wires, and the control terminal can be set as a PLC logic controller. This is existing technology. The specific structure, working principle, and possible control methods and spatial arrangement of these technical features can be selected using conventional methods in this field. This technical solution will not be further elaborated in detail.
[0022] The preferred technical solution in this embodiment is: Reference Figure 8The transparent pressure plate 3 is made of transparent plastic or glass. The gap between its lower surface and the upper surface of the conveyor belt 2 is adjusted by the compression of the spring 4 to accommodate parts of different thicknesses. During the conveying process, when a single layer of parts passes normally under the transparent pressure plate 3, since the initial gap is set to be slightly larger than H, the parts do not contact the transparent pressure plate 3 and no additional resistance is generated. When two parts overlap, the top of the upper part will touch the lower surface of the transparent pressure plate 3. At this time, due to the elasticity of the spring 4, the transparent pressure plate 3 will overcome part of the pressure of the spring 4 and float upward after being pushed upward, which passively increases the gap. At the same time, the rebound force of the spring 4 will act downward on the transparent pressure plate 3, applying a downward pressure to the overlapping parts. This pressure will press the upper part downward, causing it to slide off or separate from the lower part. On the other hand, as the conveyor belt 2 continues to move, the overlapping parts are pushed towards the entrance edge of the transparent pressure plate 3. Under the action of the inclined surface or the rounded chamfer, the upper part is gradually scraped away and eventually returns to a single layer arrangement.
[0023] Reference Figure 5 The height of the first baffle 5 and the second baffle 6 is higher than the maximum height of the parts on the conveyor belt 2, and the width between the two baffles is adjustable to accommodate parts of different diameters. When the parts move on the conveyor belt 2, the parts may undergo lateral displacement due to vibration of the conveyor belt 2, asymmetry of the part shape, or external interference. The height of the baffle is higher than the top of the part, forming a continuous sidewall. Even if the part tilts or jumps, it cannot fall over the top of the baffle and out of the conveyor belt 2. The two baffles together form a U-shaped channel, and the parts are forcibly restricted within the width of the conveyor belt 2 in the channel to prevent the production line from stopping or subsequent processes from running out of materials due to the scattering of parts.
[0024] Reference Figure 6 The magnetic strength of the magnetic strip 7 is selected according to the material, weight and diameter of the parts to be conveyed. Its length matches the working area length of the conveyor belt 2. The magnetic strip 7 is a whole strip without splicing. The magnetic force of the magnetic strip 7 causes the parts on the conveyor belt 2 to be slightly magnetized during the conveying process, and then the magnetism weakens. When the pad is carried by the conveyor belt 2 through the area of the magnetic strip 7, it is subjected to downward magnetic attraction and sticks tightly to the belt surface. Even with slight vibration, it will not jump up. When the overlapping pads are attracted to the lower pad, the upper pad is easily pushed away by the transparent pressure plate 3 or airflow due to the weaker magnetic force. Before reaching the entrance of the track 8, the magnetic force disappears and the pad slides into the track 8 by inertia without being stuck due to attraction. Since the magnetic strip 7 is complete and without splicing, all the pads are magnetized in the same direction. After passing through the magnetic strip 7, the remaining magnetism is weak and they will not stick together.
[0025] Reference Figure 2The left air nozzle 11 and the right air nozzle 12 are connected to external air sources respectively. Their air blowing direction is at an acute angle to the conveying direction of the conveyor belt 2, and the two air blowing directions are set opposite to each other. When the left air nozzle 11 blows air to the right front and the right air nozzle 12 blows air to the left front, the two airflows meet in the central area of the conveyor belt 2 in front of the track 8 entrance, collide with each other, and bounce back, forming a local turbulent area. The airflow direction and speed in this area are constantly changing, and the parts are disturbed irregularly. The parts that were originally stable due to the adsorption of the magnetic strip 7 and the vibration of the conveyor belt 2 are subjected to random aerodynamic forces from different directions under the action of turbulence, causing them to sway slightly, rotate or shift laterally. This disordered disturbance can effectively destroy the mutual adsorption or tight arrangement between the parts, so that the parts that were originally stuck at the entrance change their posture and find a suitable angle to slide into the track 8.
[0026] Reference Figure 3 Two connecting brackets 132 are fixedly connected to the left air nozzle 11 and the right air nozzle 12 respectively, and are used to adjust the position of the left air nozzle 11 and the right air nozzle 12 when moving. Since the two racks 134 are rigidly meshed with the same gear 135, and the racks 134 have the same module and pitch, the moving speed of the two connecting brackets 132 is equal in magnitude and opposite in direction. This ensures that no matter how the air nozzle spacing is adjusted, the left air nozzle 11 and the right air nozzle 12 are always symmetrically distributed relative to the center line of the track 8, so that the action area of the two airflows is always aligned with the center position of the track 8 inlet, avoiding air blowing deviation due to asynchronous adjustment.
[0027] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. An automatic conveyor belt straightening device, comprising: The frame (1) and conveyor belt (2) are characterized in that they further include: a transparent pressure plate (3) disposed above the conveyor belt (2), and a compression spring (4) is disposed between the transparent pressure plate (3) and the conveyor belt (2), the compression spring (4) being able to adjust the height of the transparent pressure plate (3) relative to the surface of the conveyor belt (2); First baffle (5) and second baffle (6) are installed on both sides of the conveyor belt (2) to prevent parts from falling off; The magnetic strip (7) is disposed below the conveyor belt (2), the magnetic strip (7) extends along the conveying direction and cannot be composed of multiple segments spliced together; Track (8) is installed at the exit end of the conveyor belt (2); Multiple full-load sensors (9) arranged along the track (8) are used to detect whether the parts in the track (8) are fully arranged; Photoelectric through-beam sensor (10) is installed at the entrance of track (8); The left air nozzle (11) and the right air nozzle (12) are movable and set on both sides of the entrance of the track (8).
2. The automatic conveyor belt straightening device according to claim 1, characterized in that, Also includes: Control system; When all the full-load sensors (9) have a signal, it is determined that the parts in the track (8) are full; When the full material sensor (9) has no signal and the photoelectric beam sensor (10) has a signal, the conveyor belt (2) is controlled to run in the reverse direction for a certain distance and then run in the forward direction. At the same time as the forward operation begins, the left air nozzle (11) is controlled to blow air, pause for a preset time, and the right air nozzle (12) is controlled to blow air in sequence to disrupt the arrangement of the parts.
3. The automatic conveyor belt straightening device according to claim 1, characterized in that, The transparent pressure plate (3) is made of transparent plastic or glass, and the gap between its lower surface and the upper surface of the conveyor belt (2) is adjusted by adjusting the compression amount of the spring (4) to accommodate parts of different thicknesses.
4. The automatic conveyor belt straightening device according to claim 1, characterized in that, The height of the first baffle (5) and the second baffle (6) is higher than the maximum height of the parts on the conveyor belt (2), and the width between the two baffles is adjustable to accommodate parts of different diameters.
5. The automatic conveyor belt straightening device according to claim 1, characterized in that, The magnetic strength of the magnetic strip (7) is selected according to the material, weight and diameter of the part to be conveyed, and its length is matched with the working area length of the conveyor belt (2).
6. The automatic conveyor belt straightening device according to claim 1, characterized in that, The left air nozzle (11) and the right air nozzle (12) are respectively connected to an external air source. Their air blowing direction is at an acute angle to the conveying direction of the conveyor belt (2), and the air blowing directions of the two are set opposite to each other.
7. The automatic conveyor belt straightening device according to claim 2, characterized in that, The blowing sequence and pause time of the left air nozzle (11) and the right air nozzle (12) are programmable and set by the control system. The first air blowing is used to loosen the stacked parts. During the pause, the parts tend to be stabilized by the magnetic strip. The second air blowing is used to adjust the posture of the parts to facilitate their entry into the track.
8. The automatic conveyor belt straightening device according to claim 1, characterized in that, The magnetic strip (7) is a single, seamless structure. The magnetic force of the magnetic strip (7) causes the parts on the conveyor belt (2) to be slightly magnetized during the conveying process, and then the magnetism weakens.
9. The automatic conveyor belt straightening device according to claim 1, characterized in that, The frame (1) is also provided with an adjustment mechanism (13), which includes a fixed frame (131), a shaft motor (133), a gear (135), two connecting frames (132) and two racks (134). The fixed frame (131) is fixedly connected to the outer bottom of the frame (1), the connecting frame (132) is slidably connected to the side wall of the fixed frame (131), the shaft motor (133) is fixedly installed at the center of the fixed frame (131), the rack (134) is fixedly assembled on the connecting frame (132), the gear (135) is fixedly assembled on the output shaft end of the shaft motor (133), and both racks (134) mesh with the gear (135).
10. An automatic conveyor belt straightening device according to claim 9, characterized in that, The two connecting brackets (132) are fixedly connected to the left air nozzle (11) and the right air nozzle (12) respectively, and are used to adjust the position of the left air nozzle (11) and the right air nozzle (12) when moving.